Method of manufacturing interiorly-coated cans.



F; EBERHART.

METHOD OF MANUFACTURING INTERIORLY COATED CANS.

APPLICATION FILED SEPT. 9, 1912,

1,094,840. Patented Apr. 28, 1914.

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FELIX EBERHART, OF NEWARK, NEW JERSEY, ASSIGNOR T0 AMERICAN CAN COM- PANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

METHOD OF MANUFACTURING INTERIORLY COATED CANS.

oeaseo.

To all whom it may concern:

citizen of the United States, residing in Newark, in the county of Essex and State of New Jersey, have lnvented a new and useful Improvement in Methods of Manufacturing Interiorly-Coated C-ans of which the following is a specification.

This invention relates to improvements in method of manufacturing interiorly coated cans.

An object of the invention-is'to provide a process wherein the lacquer or other coating material which is employed to coat the interior of cans is utilized as the sealing or packing compound in the seam formed between the can end and body, the end and body being seamed or joined together whilethe lacquer or other protective coating material is in a soft, more or less fluid or plastic condition.

The invention furthermore consists in the improvements in the steps and the novel combinations of the steps of the process as more particularly described or claimed hereinafter.

In the drawing forming a part of this specification are illustrated various mechanisms adapted to carry out my improved process, and in said drawing, Figure 1 de-.

' notes a part sectional view of a portion of a machine adapted to spray or coat can ends with lacquer or other protective coating material. Fig. 2 represents a portion ofa double seaming machine, parts being broken away to more clearly illustra e the construction, and Fig. a sectional View of a baking or drying apparatus employed for,

drying or hardening the lacquer or other coating material after the can body and end havebeen united v In the drawing, 10 denotes the table or platform of a spraying; or coating machine suitable for applying l'ii'cquer or other coating material to canendsy a'nd over said table or platform, as shown in the drawing, is.

' adapted to run an endless conveyor 11 provided with can end holding chdcks 12 in which are adapted to be seated can ends 13, the latter bein sprayed with the lacquer or other coating material as they pass beneath the spraying nozzle. 14, which is supplied the lacqueixor other equivalent mate- ...1 pipe leading to a suppl own}, lacquer or other ma- 7 Specification of Letters Patent. Application filed September 9, 1 912. SerialiNo. 71 9 369.

Patented Apr. as, 1914} upper surface of the can end,incl ud ing the double seam. While the coatingmaterial is soft or in a more or less liquid or plastic condition, the can .end is loosely unitedto a can body 18, the latter being formed pref erably from a previously lacquered or coated loosely assembled can body and end are'then placed in the seaming machine 19 between the chucks 20 and 21, and double4seamed by the seaming rollers, oneof which is a cam 23 in a well known manner. After the seamer, the can is then placed on an endless conyeyer 24; and passed through a drying or baking oven 25 to thereby dry or harden the lacquer or other equivalent protective coating material.

the coating material is applied to the entire can endfiange which-forms part of the sheet and flanged in the usual manner. The

shown at 22 and adapted to be operated by the can body and end have been united by v p terial being forced through the perforations 7 Be it known that I, FELIX EBERHART, a

'The mechanisms shown in the drawing and described, represent merelywellknown forms for carrying out the process, but it 'Wlll be evident that the lacquer'or coating material might be applied in other ways,

and also that the ends and bodiesmight be united by seams of other form than double seams. Furthermoref-the process is-not limited to the employment of lacquer or coating material which must be dried or baked,

using substances which dry and harden flashed, the process remaining the. same to serve both as a protective coating and as a aling or packing compound; a

The advantages resulting from the employment of my improved process are many, and among them may be noted .the following: By uniting the can end, with the coating material in a soft or unhardened con- -dition, to the can body, all danger of scratching or marring the lacquer on the can. end is thus avoided. Hitherto where the can-heads have been lacquered or otherstacks, the lacquer or coating has been liable wise provided with a protective coating, and shipped in quantities and fed fromsince the process could-be carried out by spontaneously, or, which may even be so long as the coating material is adapted to injury from scratching and mat-ring. llith my improved process, the lacquer or other compound used for coating is evenly distributed throughout one entire surface of the can end, including the seam-forming flange, which results in an even distribution of the material throughout the entire seam, Whereas hitherto in the old. process, Where the. dope sealing or packing material has been applied to the can end seaming flanges and dried, it has been found that the sealing or packing material, during the drying step, runs and collects unevenly in the groove, With the result that portions of the seam are unprovided with any sealing compound at all.

I olaimz 1. The method of manufacturing intcriorly coated, seamed cans which consists in coating the entire surface of a can end, including its seam forming flange, With a combined protective and seal-forming coating material, then assembling the coated can end, while the coating material is still soft, with a flanged can body having a hardened protective coating on its interior, and then seaming said can end and can body before the coating material in the joint has hardened;

2. The method of manufacturing interiorly coated, seamed cans which consists in the coating one entire surface of a can end, including its seam formin fflange, with a combined protective and sealorming coating ma lal, then assembling the coated. can end, while the coating material is still soft, with a flange can. body having a hardened rotective coating on its interior, then seaming aid. can end and can body before the coating material in the joint has hardened, and finally subjecting the seamed can to a drying or halting operation.

F), The method of manufacturing in teriorly coated, seamed cans which consists in coating a can end with a combined protective and seal-forming coating material, then assembling the coated can end, while the coating material is still soft, with a flanged can body made from previously coated plate and then seaming the can end and body together.

4. The method of manufacturing in teriorly coated, seamed canswhich consists in coating a can end with a combined protecwith a combined protective and seal'fornn tive and seabforming coating material, then. assembling the-coated can end, While the coating material is still soft, with a flanged can. body made from previously coated plate, seaming the can end and body together and finally subjecting the seamed can to a" dry,- ing or halting operation.

5. The method of manufacturing interiorly coated, seamed cans "which consists in coating a can end with a combined protective and seal-forming coating material, then assembling the'coated can end, while the coating material is still soft, with a. flanged can body havinga hardened protective coating on its interior, and then seaming the can end and body together.

6. The method of manufacturing in teriorly coated, double seamed cans which consists in coating a can end with a combined protective and seal-forming coating material, then assembling the coated can end, while the coating material is still soft, with a flanged can body made from previously coated plate, and then double seaming the can end-and body together.

TT'lhe method of manufacturing interiorly coated, double seamed cans which consists in coating one entire surface of a can end, including its seam forming flange,

ing coating material, then assembling the coated can end, while the coating material is still soft, with a flanged can body hav ing a. hardened protective coating on its in terior, and then double seaming the can end, and can body before the coating material in the joint has hardened.

8. The method of manufacturing interiorly coated, double seamed cans which consists in coat ng one entire surface of a can end, including its seam forming flange, "with a combined protective or seal-forming coating material. then assembling the coated can end, hile the coating material is still soft, with a flanged can body having a hardened rotcctive coating on its interior, then doub e seaming the can end and can body before the coating material in the joint has hardened, and finally subjecting the seamed can to a drying or baking operation.

' FELIX EBE'RllAlt'i".

Witnesses:

' W. l). Fos'rnn,

C. 'W. GRAHAM.

Bop'les of this patent may be obtained for tire cents each, by addressing the Commissioner of rstonts. "Washington, B. c.

' Letters Patent No. 1,094,840.

it is hereby certified that in Letters Patent No. 1,094,840, glfanted April 28, 191, epqn'the applicatioh of F elik Eberhert, of Newerk, New Jersey, for an improvement a? "in' Methods 9f Mamiftcturirig*InteriorlyCoa ted Cans, erroris appeal in the prihted speeification requiring QOliI'GCfiQn as "follows; Page 2, line 32, before the weird coatingstrike.out the a1'ti cle=the"; sztme page, line 96, toi' the word or read and; andi that the said Letters Patent sheuld be read With these c orrec tions therein that the same may conform to the record of the ease in the Patent Oflice.

' E v "Signed a'J nd sealed this 26th day f May, A.' D 1'914..

.g [sEAIhj I I R. F. WHITEHEAD;

CS Acting Commissioner of Patents. 

